Mine car



Feb' 8' 1927' L. ALMQuls'r ET AL MINE CAR Filed Jui 2 Sheets-Sheet 2 y17, 192e l\ Patented Feb. 8, 1927.

UNITED .STATES PATENT OFFICE.

LEOPOLD ALMQUIST, OF NEW YORK, N. Y., VICTOR WILLOUGHBY, F`RIDGE- WOOD,NEW JERSEY, ASSIGNORS TO AMERICAN CAR AND FOUNDRY COMPANY, 0F NEW YORK,N. Y., A' CORPORATION OF NEW JERSEY.

MINE GAR.

Application mea my 17, 192e. serial 1210.123169. j

In the drawings:

Fig. 1 is a view partly in longitudinal sec` j tion and partly insideelevation with a wheel and part of an axle broken away, of a mine.

car constructed lin accordance with this invention;

Fig. 2 is a partial longitudinal section taken adjacent the sill in Fig.4 and showing the drop doors in closed osition; i.

Fig. 3 is a partial horizontal section taken on the line 8-3 of Fig. 2;

Fig. 4 is a partial vertical transverse section taken on the line 4-4 ofFig.' 2;

Fig. 5 is a plan view of one corner of the free edge of one of the doorsforming the floor of the car; l

Fig. 6 is a partial transverse section taken on the line 6-6 of Fig. 2and shows another view of the corner shown in Fig. 5;

Fig. 7 is a view similar to Fig. 2 showing in Solid lines one door indroppedposition and the latch .operated by that door and showing indotted lines the closed position ofthe adjacent door and thev full openposition of the latch operating door;

Fig. 74L is afragmentary section similar to Fig. 7 showing the relativepositions of a door latch and its operating cam as the cam returns thelatch to door holding position.

' Fig. 8 is a view similar to Fig. 2 showing a modified construction;

Figs. 9 and 10 are Sections taken on lines 9-9 and 10-10, respectively,of Fig. 2, and Figs. 11 and 12 are sections similar to Figs. 9 and 10 ofmodifications yoit' the structures shown in Figs. 9 and 10,respectively.

This invention relates to mine cars of the drop bottom type wherein thebottom con-l sists of a pluralityof doors hinged at one end andoperating the latch of an adjacent door, and it is an object of thisinvention to provide an improved latchingmeans which will be operatedAbythe movements of one door Ato control the operation of `anfadjacentdoor. It is also an object ofthisf'invention to vprovide an improved.latch "engaging means on the door which will re-inforce the corner ofthe door. H

In the drawings, the inventionv is shown applied to amine car comprisingside -sills 1 and end sills 2 both being of channel shape and havingtheir iianges projecting outwardly. The side sills and end sills aresecured together at their ends by angle members 4 and the end sillssupport bumpers 5I and drawbars 6 of suitable "construction, the

bumpers and drawbars being provided with openings for the usual couplingpins 8. To the upper flanges 10 of the side sills 1 are secured theinner edges of the side sheets 12, the side she ts 12 being joined attheir end by the end s eets 14 secured thereto by the inwardly bentflanges 15 of the end sheets. The end sheets 14 are spaced inwardlyIfrom the end sills 2 and extend downwardly between the side sills 1.The car is supported on wheels 16 mounted on axles 18 which ex- .tendthrough openings in the side sills 1 and ,28 which engage a shaft 30mounted in bearing brackets 32 secured to the lower flanges `34 of theside sills. In the construction shown in Figs. 1 to 7 the doors 22 and24 are provided with hinge straps 35 which engage short shafts 36 havingtheir outer ends journaled in bearing brackets 38 secured t0 the flanges34 of the side sills and their inner ends journaled in bearing brackets40.

The bearing brackets 40 arel provided with outwardly projecting anges 42by which they are secured to outwardly projecting flanges 44 ofchannel-shape braces or hood members 46 which extend between the sidesills land are provided at their ends with laterally extending flanges48 bywhich the members 46 are secured to the webs 50 and. upper angeslOof the side sills 1.

The hinge straps 35 are provided with cam-shaped portions 51 formedintegrally therewith which engage pivotally mounted latch members 52.The latch lmembers 52 are journaled on pins 54 which are mounted in theWebs50 of 'the side .sills and in the hoods 46, the hoods being enlargedat their ends to provide opemngs to receive the latchV members 52. Thepins 54 are retained in po- 'sition by heads v56 and cotter .pins 58.The

doors 20 and 22 are cut away at the corners closed, as shown in Fig. 1,operating the` latch 68 by any desired means, such as shown in patent toNichols mentioned above, will release the lug 66 permitting the door 24to drop, and operate the cam member 51 o'n the door 24. .Operation ofthe cam 51 will cause it to be'moved from the position shown in Fig. 2in which the surface 70 of the cam is in engagement with the surface 71of the latch member and holds the latch member in engagement with thelug 64 on the door bringing the surface 72 of the cam 51 rst intoengagement with the surface 73 of the latch member 52 and then, as thecam is further operated, into engagement with the surface 7 4 of thelatch 52 operating the latch 52 to Withdraw the projection 60 of thelatch from beneath the lu 64, and permitting the door 22 to drop. ovement of the cam 51 will be continued as the door 24 drops until thesurface 7 Ogof the cam is brought beneath the surface 73 of the latch inwhich position the door will be in its normal fully .open position, asshown in solid lines in Fig. 7, and the latch willvbe held free of thedoor 22. To revent the latch 52 dropping in back of t e cam 51 shouldthe door 24` swing beyond the position shown in solid lines Fig. 7, theouter surface 70 of the cam 51 is continued by means of a wing portion75 at Ione end ofthe cam 51 which ywill engage with the surface 73 andretain the latch 52 in its raised position until thev surface 76 on thehinge member 35 engages with the bottom surface 77 of the projectingportion 60v of the latchv member 52 and prevents further'movement of thedoor 24. Releasing the latch 52 from the 'door 22 ermits the door 22 todrop and operate t e latch 5 2 which retains the door 20 in the closedposition in the same manner. v

The doors are returned to closed position in the reverse order-by anysuitable means as by that shown in the patent to Nichols previouslymentioned, the door 20 being raised to its fully closed position beforet e door 22 is operated to return the cam 51 to the position shown inFig. 2 in' which the surace of the cam 51 is in engagement with thesurface 71 of the latch 52 and the latch is held in the door retainingposition. Should the latch fail to fall to doorl retaining position uponmovement of the cam 51 the surface 78 of the cam 51 will engage firstwith the surface 71 and'then with the surface 79 of the latch 52 forcingthe latch 52 to the door retaining position vas the door 22 is returnedto its fully closed position in, which position the surface 70 of thecam 51 is in engagement with the surface 71 of the latch 52 and holdsthe latch in the door retaining position.- It will be noted as shownfinFigs. 7a, 9, and 10 that lthe projecting portion 60 of the latch 52 iscutaway to permit passage of the wing portion of the cam 51 as the cam51 is operated. The door 24 will be closed in the same manner as thedoor 22 bringing the latch 52 into engagement with the lug 64 on thedoor 22 as the door 24 is returned to its fully closed position. Also inits fully closed position the door 24 brings the lug 66 into engagementwith the latch 68 thereby locking all of the doors in the fully closedposition.

In the modification shown in Fig. 8 the hinge straps 35 for the doors 22and 24 arci rotatably mounted upon the axles 18 and are provided withcams 51 which operate the latches 52 mounted on' pins 54 as in Figs. lto 7. Each latch 52 is provided with an outwardly projecting portion 60which is in engagement with the lug 64 on the member 62 carried'by theadjacent door. As in the other construction, the dropping of the doorwill cause the surface 72 of the cani 51 to engage with the surfaces 73and 74 ofthe latch 52 the cam 51 moving the latch from the doorretaining position to a position in which the lsurface 70 of the cam isin engagement with the surface' 73 of thelatch and servesto hold thelatch in released position. In this construction the surface 70 ofthecam will remain in engagement with the surface 73 of the latch shouldthe door swing ast its normal fully openedposition and w1 retain thelatch 'mits released position until the hinge strap 35engages with thesurface 77 of the latch and stops further movement of the'door, thuspreventing the latch from dropping in back of the cam f 51. In theclosing operation of the doors, the surface 78 of the cam will bebrought into engagement with the surfaces 71 and 79 of the latch shouldthe latch fail to return to its door retaining position by gravity, thusforcing the'latch to its door retaining position until in the fullyclosed position of the doors the surface 70 of the cam 51 will be inengagement with the surface 71 of the latch 52 and hold the latch in thedoor retaining position.

In the modifications shown in Figs. 11 and 12, the cam 51 is providedwith winged portions 7 at` each side instead of on one side as shown inFig. 9, serving to more effectually hold the cam and the latch in roperrelation. In order to cooperate with t e cam vraway on both sides toreceive the wing portions 75 instead of being cut away on one side as inFig. 10.

What is claimed is: l 1. In a-mine car, aplurality of pivgtally ymounted doors, a latch'for one of said doors,

door.

and a cam on the other of said doors to o erate said latch to releasesaid rst door,`sa1d cam servingto hold said latch in door retainingposition.

2. In a mine car, aplurality of pivotally mounted doors, a latch for oneof said doors and a cam on the other of said doors to operate said latchto release said rst door, said latch limiting the opening movement ofits operating door.

3. In a mine car, a pivotally mounted door, a pivotal] mounted latch forsaid door, a. second pivotally mounted door having a cam for operatingsaid latch torelea said 'first door, said c'am holding said latch indoor-retaining position and said latch limiting the opening movement ofits operating 4.`In a mine car, a pivotally mounted door, a pivotallymounted latch for said door, a second door, a hinge strap for pivotallysupporting said door, and a cam on said hin e strap operatively engagingsaid latch an adapted to hold said latchin door y releasing position.

5. In a mine car, a pivotally mounted door, a pivotally mounted latchfor said door, a second pivotally mounted door having a cam foroperating said latch, Said cam engaging said latch to retain itlin doorretaining and door releasing positions.

6. In a mine car, a plvotally mounted door, a pivotally mounted'latchfor said door, a second plvotally mounted door yhavv ino` a camoperativel engaging said latch saiad cam retaining said latch in doorlretain: ing and door releasing positions and said latch limiting theopening movement of its operating door. f

7. In a mme car,I a pivotallyv mounted` I door, a. ivotally mountedlatch for said door, an a second pivotally mounted door having a camoperatively engaging said latch, said cam holding said latch in doorreleasingl position and said latch limiting the opening movement of itsoperating door.

8. In a mine car, a door, a latch and mea-ns carried by said door toengage said latch, said door being cut. away to receive said means andsaid means reinforcing said door.

9. In a mine car, a door, a latch and means to engage -said latchcarried by said door, said ydoor being cut away at a corner to receivesaid means and said means reinforcing said corner. f 4

10.' In a. mine car, a door cui'.` away vat a corner, .reinforcing meansfor Said corner `having a projection thereon and a latch to engage saidprojection. l

11. In a mine car, a door cut away at a corner, a latch for said doorand reinforcing means for said corner having means to engage said latch.

12. In a mine car, a door latch, a door cut away to receive s ad latchand means carried by the door to engage said latch, said meansreinforcing said door. In witness whereof we our hands.

LEOPOLD ALMQUIST. VICTOR WILLOUGHBY.

e hereunto set

